Home / 28,312.88-42,418.44-15,818

Finding the Fourth Proportional to 28,312.88, 42,418.44 and 15,818

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Solution

The fourth proportional to 28,312.88, 42,418.44 and 15,818 is: 23,698.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.88 : 42,418.44 = 15,818 : x
  2. Step 2: Convert to fraction form
    28,312.88/42,418.44 = 15,818/x
  3. Step 3: Cross multiply
    28,312.88x = 42,418.44 × 15,818
  4. Step 4: Simplify right side
    28,312.88x = 670,974,883.92
  5. Step 5: Solve for x
    x = 670,974,883.92/28,312.88
  6. Step 6: Final answer
    x = 23,698.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.